This page lists the AORKEYs associated with peak-up failures, organized by IRS campaign. Each AORKEY is a link to two plots illustrating the problem. The left plot is an acquisition image and the right plot is a Sweet Spot image. See the IRS Instrument Handbook for a description of the peak-up acquisition algorithm. Each plot is 43 by 43 arcseconds. In each image, the square indicates where the intended peakup target should have been. The circle indicates the position of the brightest centroid in the frame.

Total number of failures: 58 (not including IRS-49)

IRS-2, aor=4195584 -- In ACQ, jailbar amplitude in excess of source flux. No impact on science?

IRS-4, aor=3733248 -- No source in PU. Science lost.

IRS-7, aor=6313728-- No source in PU, due to observatory problem with proper motion. Science lost.

IRS-10, aor=9007360-- no source in PU. Science lost.

IRS-11, 10 failures with no source in PU -- Science lost.

IRS-14, 5 failures with no (or very faint) source in PU -- Science lost.

IRS-15, aor=10198016-- No source in PU Science lost.

IRS-18, aor=13136128 -- No good source

IRS-19, aor=3890176 -- No source in field

IRS-20, aor=10502144 -- No source in field. Science lost.

IRS-20, aor=11272704 -- source flux overestimated

IRS-23, aor=13622528 -- source flux overestimated

IRS-24, aor=14574848 -- no source in field

IRS-26, 4 failures -- no source in PU Science lost.

IRS-27, aor=13818624 -- source too faint Science lost.

IRS-28, aor=15071488 -- source too faint Science lost.

IRS-29, aor=15034112 -- source too faint Science lost.

IRS-30, aor=15070464 -- source too faint

IRS-30, aor=15070720 -- no source in PU Science lost.

IRS-30, aor=17058816 -- no source in PU Science lost.

IRS-31, aor=15072512 -- no source in PU Science lost.

IRS-32, aor=14526464 -- source fainter than predicted

IRS-32, aor=14539008 -- no (or very faint) source in PU Science lost.

IRS-34, aor=17732608 -- source fainter than predicted

IRS-34, aor=18053632 -- source fainter than predicted

IRS-35, aor=17732096 -- source fainter than predicted

IRS-39, aor=19494656 -- no source in field

IRS-39, aor=19666432 -- no source in field

IRS-41, aor=17732864 -- source fainter than predicted

IRS-44, aor=21746176 -- Incorrect PM for PU target. No source on field

IRS-44, aor=21746432 -- Incorrect PM for PU target. No source on field

IRS-44, aor=22490624 -- Source fainter than predicted

IRS-47, aor=21921792 -- Bright source in Blue PU caused all pixels in Red PU to be flagged as CR

IRS-48, aor=22921984 -- No source in field

IRS-53, aor=27516928 -- No source in field

IRS-59A, aor=29056512 -- Source fainter than predicted

IRS-59B, aor=26832128 -- Incorrect PM for PU target. No source in field

IRS-59B, aor=26832640 -- Incorrect PM for PU target. No source in field

IRS-59B, aor=26832896 -- Incorrect PM for PU target. No source in field

IRS-59B, aor=26833152 -- Incorrect PM for PU target. No source in field

IRS-61, aor=25385728 -- Source fainter than predicted

IRS-61, aor=25387008 -- Source fainter than predicted